Info

What's better? To check every if a function is defined or place a empty function as default.

Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    var funcs = {
      emptyFunc: new Function(),
      someFunc: function() {
        var x = 1;
        var y = 5;
        return x > y
      },
      nullFunc: null
    }
  };
</script>

Test runner

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funcs.emptyFunc();

if (funcs.emptyFunc != null) {
  funcs.emptyFunc();
}

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